12 split as
Reading: 6.0 ------2 points (moderate proficiency)
Listening: 6.5 ------2 points (moderate proficiency)
Writing: 7.0------4 points (high proficiency)
Speaking: 8.0------4 points (high proficiency)
very good at speaking and writing; but weak in listening and reading - means you did not try any sample exercises/tests before the actual exam. I am quite convinced you were capable of getting higher score in these 2 as well, with some simulation tests.